Electric-battery-jar closure



Nov. 15, 1927.

C. A. BORNARTH ELECTRIC BATTERY JAR CLOSURE Filed Aug. 2S. 1924 lfd/amn C/fH/PL f6 50p/wwf# @y jhu/LCM* 1%@ Patented Nov. 15, 1927.

UNITED STATES itftdytid l @l rl ELECTRIC-BATTERY-JAR CLOASURE.

Application filed August 28, 1924. Serial No. 734,562.

The invention relates to improvements in electric battery jar closures.

011e of the objects of the invention is` to provide a closure for a battery jar which has a double seal witha. properly formed jar to preventescape of evolved gas-ee except through a vent provided for the purpose.

Another object is to provide a closure of soit rubber, or like substances2 which is attached to the glass jar or container by partly turning the skirt back ver the stopper then inserting the stopper in the jar and then turningithe skirt down.

Another object is to provide, in a closure, means to support the electrodes oit' the battery by rictional engagement with the Clo sure.

Another object is to contract the diameter of the skirt at its bottom edge.

Other objects, benelits and advantages will hereinafter appear from a consideration of the following description, when taken in conjunction with the drawings, wherein r- Fig. 1 is an elevation of a battery jar with the cover attached thereto.

Fig. 2 is an enlarged fragment of the jar with the closure in place, shown in central axial section.

Fig. 3 is a plan View ot the closure.

Fig. 4 is a side elevation of the closure showing parts in section.

Fig. 5 is a central section showing the stopper part inserted in the jar and the skirt turned up.

ln all the views the saine reference characters are employed to indicate similar parts.

rThe invention is especially adaptable for use with jars used in storage batteries. although it may advantageously be used in connection with any so-called wet batteries.

The jar 5 is preferably round in cross section and near its mouth its wall 6 bent inwardly to provide an annulaigroove 7 without materially changing the thickness of said wall. The inside surface 8 above a horizontal plane containing the groove is tapered or outwardly lared, as shown, to cause a compressing lit ot the stopper or closure in contact with said surface.

The inwardly deflected portion 9 of the wall slightly conlstricts the neck oi' the bottle by the production of the annular hump 9 which prevents the stopper from entering too far into the bottle.

-face oif the wall portion 13 which defines the mout-h of the bottle.

The skirt 12 has an inner annular bead 14 which fits snugly in the groove 7, being held therein by the contracting properties of the sott rubberof which it is made. When the bead 14 is in the groove 7 the closure cannot be moved axially of the jar or bottle by a direct pull or pressure exerted on the closure. i

yll`he closure may be readily removed by placing the closure in one hand and gripping it, then seizing the jar or bottle in the other hand and relatively rotating the jar and bottle, whereupon the bead 14 will leave the groove 7 and the closure may then be removed.

The closureis provided with holes 15 and 16 thru which to pa-ss the terminal ends of the electrodes or battery plates and in which they may be suspended by frictional engagement.

Another hole 17 for filling is intended to be partially vlilled by the vent plug 18.

The plug may have a vent aperture 19 thru which the occluded gases. arising from the electr-chemical decomposition due to charging or other chemical action, may escape from the jar.

The skirt and the stopper provide a double seal and the stopper is held by the skirt against a tendency to escape from the tapered opening comprising the throat of the bottle.

The skirt 12 must be stretched by forcing it down. so that the bead 14 will pass over The skirt 12 is tapering, being smaller in diameter at its lower end than at any point above. p

To apply the device the skirt is turned up, as shown in 5. whereupon the stopper is inserted in the bottle, as shown, and

then the skirt is rolled down into position shown in Figs. l and 2.

The skirt provides a second seal and prevents the salts from the battery from creeping over the mouth of the jar.

lVhile in the claims the word battery7 is used for the purpose of description, it is manifest that the word does not limit the closure for this use alone.

Having described 1ny invention what I claim as new and desire to secure by Letters Patent, is

1. The combination with a jar having a tapered mouth, an outer annular groove provided below the mouth of said jar, a closure adapted to tit the mouth of said jar, and a tapered skirt having an inner annular bead associated with said closure to cooperate with said groove.

2. The combination with a jar having a peripheral groove, a closure for said jar, a tapered depending skirt associated with said closure, said skirt having an annular bead to cooperate with said peripheral groove.

3. In combination, a battery jar having its annular Wall curved inwardly near its open end to provide a restricted tapered mouth, and a one-piece closure for said jar, said closure comprising a tapered body portion for insertion in the mouth of said jar, a tapered skirt carried by said body portion, and cooperating means on said jar and skirt for retaining said closure in place.

4. A closure Jfor jars, comprising a tapered body portion, a tapered skirt secured to and spaced from said body portion, and an annular bead projecting inwardly from said skirt.

5. A jar closure comprising an inwardly tapering body portion, a skirt integral with said body portion and tapering substantially parallel thereto, and an annular bead inwardly projecting from said skirt.

G. A jar closure comprising a body portion, a tapering skirt carried by said body portion and spaced therefrom, the smaller diameter of said skirt being normally adjacent its lower end, and an annular bead on the inner wall of said skirt.

In testimony whereof I hereunto set my hand.

CHARLES A. BORNARTH. 

